I 



ANACAUDlAClCiE. (CASIIICW FAMILY.) Ill 



heaven," — is much planted as a shade-tree, especially in towns, and is inclining 

 to spread tVoin sctd in rcniisylvania. It hclonj^s to the order 8iMAnuBACE.«, 

 wliicii differs troni Kutaceic in the absence of dots in the leaves. The tree is 

 known by its very lonj; pinnate leaves of many leaflets, and small poly<;aniou8 

 greenish Uowers in panicles, the female jirodueiuy 2-5 thin, lineiir-ol)loiig, veiny 

 samaras. (Adv. from China.) 



Okdkr 2(3. ANACARDIACEiE. (Cashew Family.) 



Trees or shrubs, with a resinous or milky acrid juice, dolless alternate 

 leai-es, and small, ojlen poh/(jamous, regular, jicntandrous Jloivers, with a 1- 

 celled and l-ovuled ovar>/, hut icith 3 styles or stigmas. — Petals imbricated 

 in the bud. Seed without albumen, borne on a curved stalk that rises 

 from the base of the cell. Sti{)ules none. Juice or exhalations oi'teii 

 poisonous. — Represented here only by the genus 



1. RHUS, L. SuMACii. 



Sepals 5. Petals 5. Stamens 5, inserted under the edge or between the lobes 

 of a flattened disk in the bottom of the calyx. Fruit small and indehiseent, a 

 sort of dry drupe. — Leaves (simple in R. Cotinns, the Smoke-Plant of gavd^^m) 

 usually compound. Flowers greenish-white or yellowish, (The old Greek and 

 Latin name of the genus.) 



§ 1. Sumac, DC. Flowprs poli/udmoun, in a terminal thijrsoid panicle: fruit 

 (j'ohular, clothed with acid crimaon hairs; the stone smooth: leaves odd-pinnate. 

 {.\ot poisonous.) 



1. R. typhina, L. (Stagiiorx Sumach.) Branches and stalks densely 

 velcety-huiry ; leaflets 11-31, pale beneath, oblong-lanceohite, pointed, serrate, 

 rai-ely laciniatc. — Hillsides. June. — Shrub or tree 10° -30° high, with or- 

 ange-colored wood. 



2. R. glabra, L. (Smooth S.) Smooth, some irhat t/luucotts: leaflets 1 1 - 

 31, whitened beneath, lanceolate-oblong, pointed, serrate. — Rocky or barren 

 soil. June, July. — Shrub 2° - 12° high. A var. has laciniate leaves. 



3. R. eopallina, L. (Dwarf S.) Branches and stalks downy; petioles 

 triii;]-m(in/iiicd between the 9-21 oblong or ovate-lanceolate (often entire) leaf- 

 lets, which arc oblique or unequal at the base, smooth and shining above. — 

 Rocky hills. July. — Shrub l°-7° high, with running roots. 



§ 2. TOXICODENDRON, Tourn. Flowers polyrjamous, in loose and slendef 

 axillary paniclis: fruit globular, (jlabrous,tvkitish or dan-colored; the stone stri' 

 ate: leaves odd-pinnate or 3-foliolate, thin. {Poisonous to the touch.) 



4. R. venenata, DC. (Poisof S. ou Dogwood.) Smooth, or nearly 

 80 ; leaflets 7-1'?, olxwate-oblong, entire. (R. Ve'rnix, L.) — Swam])s. June. — 



^Shrub G°-1S° bi^h The nmst poisonous species: also called Poison Elder. 



5. R. Toxicodendron, L. (Poison Ivy. Poison Oak.) Climbing 

 by rootlets o\ cr rocks, &c., or ascending trees ; hajhts 3, rhombic-ovate, njostly 

 pointed, and rather downy beneath, variously notched, sinuate, or eut-lobed, — or 

 else entire, then it is R. radlcans, L. — Thickets, low grounds, &c. Juna. 



